Routing and die-sinking machine.



3 SHEETS-SHEET I.

Patented June 29, 1915.

H. HILLS. ROUTING AND DIE SINKING MACHINE.

APPLICATION FILED NOV. I3. 1914- WIX-vwo an H. HILLS.

ROUTING AND DIE SINKING MACHINE.

APPLICATION FILED NOV, I3. 19M.

1,1%%,%2D Patented June 29, 1915.

3 $HEETS-SHEET 2.

f'i% I wi/l vwowo H. HILLS."

ROUTING AND DIE SINKING MACHINE.

APPLICATION FILED NOV. 13. I914.

l,14 %2 Patent-ed June 29, 1915.

3 SHEETS-SHEET 3.

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srarns rare ohm HOMER HILLS, 0F JACKSON, MICHIGAN.

ROUTING AND mn-smxme macnmn.

maasez.

To all whom it may concern Be it known that I, HOMER HrLLs, a citizen of the United States,'residing at J ack son, in the county of Jackson and State of Michigan, have invented certain new and useful Im rovements in Routing and Die- Sinking achines, of which the following is a specification.

This invention appertains to machines for die sinking, profiling and milling, and the object of the improvements hereinafter more fully described has been to devise a machine of the above type employing a circularly movable routing headwhereby operations such as the milling of semi-cylindrical forms, or parts offorms, as for example the impression in a die block for parts such as an automobile crank shaft or the like, may be facilitated.

' In the practical embodiment of the present invention, novel means are utilized for efi'ecting and controlling the peculiar movement of the routing head,- the latter being supported primarily by associated spaced rotary members which members are alternately driven in opposite directions whereby the desired movement of the tool head is obtained, the tool mounted thereon moving on the arc of a circle.

Not only do I provide novel means for mounting thetool head but the driving ineans used by me, especially the instrunientalities whereby the rotary members are alternated in respect to direction of movement under the control of an automatically reversible clutch, are new; in addition to which instrumentalities I provide especiallydesirable means for varying the extent of movement of the head by adjusting the connections intermediate said head and the rotativc members upon which the same is supported.

A clear understanding of the invention will be had upon'reference to the following detailed description and to the accompanying drawings, in which Figure 1 is a view mainly in elevation, partially broken away, and with some detail parts in section. of a machine embodying the invention. Fig. 2 is a plan view of the same, the base and movable table or bed omitted. Fig.3 is a view in elevation taken Specification of Letters Patent.

at right angles to thevieW of Fig. 1, the

majority of the parts illustrated being shown in section to bring out clearly the mounting of the routing head and the adjusting means for the same by which the extent of movement of the cutting tool may be varied. Fig. 4: is a section taken on the line 4-4 of Fig. 1. Fig. 5 is a section taken about on the line 5-5 of Fig. 1. Fig. 6 is a fragmentary sectional view on the line 6-45 of Fig. 1. Fig. 7 is a section on the line 7-7 of Fig. 1. Fig.8 is a section on the line 8-8 of Fig. 1. f

Fig. 1 of the drawings depicts in an excellent manner the general arrangement of the parts of the machine, the same being analogous to the equivalent parts of any ordinary type of milling machine. The frame of the machine is designated at 1 and the bed or movable table at 2. There is provided suitably mounted on the frame a drivingshaft 3 driven through the medium of the pulley 4: from any suitable source of power. The tool head, the mounting of which is a characteristic feature of this invention, is indicated at 5 and is supported on the upper portion of the frame by means of rotary members in the form of the worm gears 6 which are suitably journaled in the frame by means of their respective hubs 7, seen best in Fig. 3. The routing tool 8 is a-cutter ofscmi-circular form on its cutting edges and secured to the spindle 9 mounted in suitable hearings on the head or spindle housing 5. The spindle 9 is driven from the shaft 3 by means of flexible shafting comprising the telescopic sections 10 and 10 and the knuckles or universal joints 11 by which said shafting is attached atone'end to the shaft 3 and at the other end to the shaft 12, said shaft 12 carrying a bevel gear 13 meshing with a corresponding gear 1% on the spindle 9. The purpose in providing the flexible shafting aforesaid is to accommodate for movement of the head 5 in the operation of the machine, the distance be- PatentedJune29,1915.

Application filed November 13; 1914. Serial No. 871,988.

respect to the gear 6 carrying the same, the

gear having suitable bearings to permit ro tation of the screw by means to be set forth.

Each block or slide member 15 carries a pivot member or arm 17 in the form of a sleeve mounted upon a shortshaft 18 and' prevented from displacement from said shaft by a suitable clamping nut 19. Each of the pivot members 17 passes through the adjacent head 5 and the head is held from displacement by means of the collars 20 and spanner nuts 21 carried by the outer end of each member 17.

Referring especially to F ig.4, it will be seen that thescrew 16 carries a bevel gear 22 that meshes with a similar gear 23 on the shaft 24 arranged coaxial with and passing through the hub 7 of the associated worm gear 6.= On its outer end/the shaft 24 has another bevel gear 25 that meshes with a bevel gear 2-6 upon a vertical shaft 27. A hand wheel 28 is applied to the shaft 27 and by turning the said wheel it'will be apparent that the two shafts 24 intergeared with respect to the screws 16 of the worm gears 6,

may be simultaneously operated. A turning of the screws 16 will obviously cause movement of the blocks 15 longitudinally of'the screws in either of opposite directions depending upon the direction of rotation of said screws. A movement of the blocks 15 in the above manner will shift said blocks radially either toward or from the centers of the respective worm gears 6. Thus it is that by manipulation of the hand wheel 28 the position of the pivot members 17 in respect to radial adjustment upon the rotative supporting members 6 may be varied dependent-upon the nature of, the work to be performed.

Assuggested hereinbefore. the tool 8 is designed to have imparted thereto a circular or .arcuate movement, rotating, of course, meanwhile under the driving action of the shaft and intermediate connections. To effect the arcuate movement of the holder 5 and necessarily the tool mounted therein, a vertical shaft 29 is employed. said shaft carrying the worms 30 each of which meshes with an adjacent worm gear 6. The shaft 29 is operated from the horizontal shaft 31 disposed on the upper end of the frame 1 and supported in suitable hearings in brackets supported by the frame. The shafts 3 and 31 have the cone pulleys 32 and 33 respectively. so that by the provision of a suitable connecting belt motion may be transmitted to the shaft 31 and spaced reversing feed gears 34 and 35 operated, the

mg arranged radially or diametrically in ,[in reverse directions in an obvious manner under such conditions.

\ A trip shaft39 is mounted above the shaft 36 and slides in suitable bearings in the brackets supporting the shafts 31 and 36. The shaft 39 has the clutch shifting fork 4-0 fixed thereto and also a fixed trip arm 4:1,the lower end of which is arranged in the path of movement of dogs 42, two of which are adjustably'secured in a T-slot formed in theupper worm gear 6. Theclutch form 40 is adapted to hold the clutch 38 in a neutral position in respect to clutch elements on the gears 34 and 35. When, however, the gear 34 is clutched to the shaft 31 it will be apparent that the shaft 29 will be turned in one direction rotating the Worms 30 and imparting rotative movement through saidworms to the worm gears 6. The movement of the gears 6 will, of course, impart an arcuate or circular movement to the head 5 and the tool 8 mounted on the spindle?) of said head.

At a predetermined point in the movementof the head one of the dogs 42 will strike the trip arm 41 of the trip shaft 89 and i move the clutch 38 into coiiperation with the feed gear 35 and out of cobperation with respect to the gear 34, this action immediately reversing the drive of'the shaft 29 and correspondingly reversing the direction of movement of the head 5 and the tool 8. The reverse feed just described is entirely automatic and a springactuated plunger 43 engages a dog as on the trip shaft 39' to positively pull the shaft suiiiciently to cause the desired cooperation between the clutch 38 and the clutch members of the feed gears 3i cam surfacescapable of sliding engagement.

It may be noted that the worm gears 6 are prevented from displacement from the frame 1 by means of the thrust collar 45, thrust nut 46 and stationary lock nut 47.

As seen in Figs. 1 and 5, I utilize a pull pin 48 for locking the trip shaft 39 in a position in which the clutch 38 is held at neutral in respect to the feed gears 34- and 35, though any suitable means may be employed for this particular purpose within the purand 35. The parts 4-3 and 44 have opposing view of the invention.- In fact I do not wish to be limited to the detail structure of parts as described herein except as requisite having in View the appended claims for I contemplate using various means to accomplish the desired results in respect to the mounting of the essential instrumentalities constituting the invention, and the effectthe invention, what said head, and automatic means for revers-- ing the drive of said rotative members.

2. In a machine of the class described, the combination of a frame, spaced rotative supporting members mounted on said frame, a tool head carried by said supporting memhere, means for driving the supporting members to thereby impart movement to said head, mechanism for driving said rotative members, and automatic means controlled from one of the rotative members to control the operation ofsaid driving mechanism.

3. In a machine of the class described, the combination of rotative supporting members, radially adjustable pivot members mounted on the supporting members, a tool head carried by said pivot members, means for driving the rotative members, and automatic controlling mechanism for said driving means and including a part carried by one of the rotative members coiiperat ivc to effect the reversal of direction of driving of the rotative members.

a. In a machine of the class described, the combination of rotative supporting members, radially adjustable pivot members mounted on the supporting members, a tool head carried by said pivot members, automatic means to reversely drive said rotative members, and means to simultaneously adjust the pivot members in respect to the sup porting members on which they are mounted.-

5. In a machine of the class described, the combination of spaced worm gears, pivot members radially adjustable on said gears, a tool head carried by said'pivot members, a tool on said head, driving means for the tool, a worm shaft, worms on said shaft cooperating with the worm gears to drive the latter, and auti'n'nutic means to reversely operate the worm shaft. 7

6. In a machine of the class described, the combination of spaced Worm gears, pivot members radially adjustable on said gears, a tool head carried by said pivot members, a tool on said head, driving means for the tool, a worm shaft, worms on said shaft cooperatin with the worm gears to drive the latter, automatic means to reversely operate the worm shaft and comprising clutch mechanism, and trip means for said clutch mechanism controlled from one of the worm gears.

- gears with the 7. In a machine of the class described, the combination of spaced worm gears, pivot members radially adjustable on said gears, a tool head carried by said pivot members, a tool on said head, driving means for the tool, a worm shaft, worms on said shaft cooperating with, the worm gears to drive the latter, automatic means to re\"ersely operate the worm shaft and comprising feed gears cooperative with the worm shaft to drive the same in opposite directions, clutch mechanism for alternately connecting said feed worm shaft, a trip shaft controlling said clutch mechanism, and devices on one of the worm gears for automatically actuating the trip shaft.

8. In a machine of the class described, the combination of spaced worm gears, pivot members radially adjustable on said gears,

.a tool head carried by said pivot members, a

tool on said tool, a worm head, driving means for the shaft, worms on said shaft cooperating with the worm gears to drive the latter, automatic means to reversely operate the worm shaft and comprising feed gears cooperative with the worm shaft to drive the same in opposite directions, clutch mechagears with the Worm shaft, a trip shaft controlling said clutch mechanism, devices on one of the worm gears for automatically actuating the trip shaft, blocks slidingly mounted on the worm gears and supporting the pivot members aforesaid, and means to simultaneously move said blocks to thereby adjust the pivot members and the supported head carried thereby in respect to the worm gears.

0. In a machine of the class described, the combination of a pair of worm gears each provided with a guide way, a block slidable in such guide way, a screw for moving said block, a'pivot member carried by the block and movable therewith radially of the worm gear, an adjusting shaft susceptible of manual operation, gearing intermediate said adjusting shaft and the screws cooperative with the blocks of the worm gears whereby to simultaneously adjust the latter and their pivot members. a tool head carried by said pivot members, a tool supported by said head. meansfor driving said tool, and means for driving the worm gears in opposite directions to thereby impart an arcuate movement to the tool head supported thereon.

10. In a machine of the class described, the combination of a pair of worm gears each provided with a guide way, a block slidable in such guide way, a screw for moving said block, a pivot member carried by the block and movable therewith radially of the worm gear, an adjusting shaft susceptible of manual operation, gearing intermediate said adjusting shaft and the screws nism for alternately connecting said feed 10 consisting of a shaft, Worms on'said shaft coacting with the Worm gears, a shaft for driving the worm shaft, and automatic clutch mechanism for reversely operating the Worm shaft from said driving shaft.

In testimony whereof I afiix my signature 15 in presence oftwo Witnesses.

' "HOMER HILLS.

Witnesses:

CHAS. M. SPINNING, JOHN W. KNIGHT, Jr. 

